<!DOCTYPE html>
<html>
 <head>
  <title>CSS Test: CSSOM Media Query List Serialization</title>
  <link rel="author" title="Ben Sheldon" href="mailto:ben@codeforamerica.org">
  <link rel="author" title="Chapman Shoop" href="mailto:chapman.shoop@gmail.com">
  <link rel="help" href="http://www.w3.org/TR/cssom/#the-medialist-interface">
  <meta name="flags" content="dom">
  <meta name="assert" content="MediaLists are serialized according to the specification">
  <script src="/resources/testharness.js" type="text/javascript"></script>
  <script src="/resources/testharnessreport.js" type="text/javascript"></script>
  <script id="metadata_cache">/*
  {
    "mediatest_medialist_serialize_element": {
      "help": ["http://www.w3.org/TR/cssom/#the-medialist-interface",
               "http://www.w3.org/TR/cssom/#serializing-media-queries"],
      "assert": ["MediaList.mediaText equals the 'media' value of the initial 'style' element."]
    },
    "mediatest_medialist_serialize_comma": {
      "help": ["http://www.w3.org/TR/cssom/#the-medialist-interface",
               "http://www.w3.org/TR/cssom/#serializing-media-queries"],
      "assert": ["To serialize a comma-separated list concatenate all items of the list in list order while separating them by \",\" (U+002C), followed by a space (U+0020)."]
    },
    "mediatest_medialist_serialize_empty": {
      "help": ["http://www.w3.org/TR/cssom/#the-medialist-interface",
               "http://www.w3.org/TR/cssom/#serializing-media-queries"],
      "assert": ["If the media query list is empty return the empty string."]
    },
    "mediatest_medialist_serialize_lexicographical": {
      "help": ["http://www.w3.org/TR/cssom/#the-medialist-interface",
               "http://www.w3.org/TR/cssom/#serializing-media-queries"],
      "assert": ["Each media query in the list of media queries should be sorted in lexicographical order."]
    }
  }
  */</script>
 </head>
 <body>
  <noscript>Test not run - javascript required.</noscript>
  <div id="log"></div>
  <script type="text/javascript">
  
    var styleElement;
    var styleSheet;
    var mediaList;
        
    // Setup
    function setup() {
      styleElement = document.getElementById("styleElement");
      
      if (styleElement) {
        // teardown
        document.getElementsByTagName("head")[0].removeChild(styleElement);
        styleElement = undefined;
        styleSheet = undefined;
        mediaList = undefined;
      }
      
      styleElement = document.createElement("style");
      styleElement.id = "styleElement";
      styleElement.type = "text/css";
      styleElement.media = "all";
      document.getElementsByTagName("head")[0].appendChild(styleElement);  
      styleSheet = styleElement.sheet;
      mediaList = styleSheet.media;
    }
  
      
    test(function() {
        setup();
        
        assert_equals(mediaList.mediaText, "all"); 
                
    }, "mediatest_medialist_serialize_element",
    { help: ["http://www.w3.org/TR/cssom/#the-medialist-interface", "http://www.w3.org/TR/cssom/#serializing-media-queries"],
      assert: ["MediaList.mediaText equals the 'media' value of the initial 'style' element."] });

    test(function() {      
      setup();
      
      mediaList.appendMedium('screen');
      assert_equals(mediaList.mediaText, "all, screen");      
            
    }, "mediatest_medialist_serialize_comma",
    { help: ["http://www.w3.org/TR/cssom/#the-medialist-interface", "http://www.w3.org/TR/cssom/#serializing-media-queries"],
      assert: ["To serialize a comma-separated list concatenate all items of the list in list order while separating them by \",\" (U+002C), followed by a space (U+0020)."] });
      
    test(function() {
      setup();
      
      mediaList.deleteMedium('all');
      assert_equals(mediaList.mediaText, "");    
      
    }, "mediatest_medialist_serialize_empty",
    { help: ["http://www.w3.org/TR/cssom/#the-medialist-interface", "http://www.w3.org/TR/cssom/#serializing-media-queries"],
      assert: ["If the media query list is empty return the empty string."] });
      
    test(function() {
      setup();
      
      mediaList.appendMedium('screen');
      mediaList.appendMedium('print');
      assert_equals(mediaList.mediaText, "all, print, screen");    
      
    }, "mediatest_medialist_serialize_lexicographical",
    { help: ["http://www.w3.org/TR/cssom/#the-medialist-interface", "http://www.w3.org/TR/cssom/#serializing-media-queries"],
      assert: ["Each media query in the list of media queries should be sorted in lexicographical order."] });

  </script>
 </body>
</html>